Drilling-rig.



A. C. .Z1ERATH.

DRILLING RIG.

APPLICATION FILED MAR. 20, 1911.

Patented Dec. 31, 1912.

.0 2 J3 f www 1x2/f mm www@ I f m ..3 ,I www xl U M 5,3 4 vou! jY 7. Anm 9 219 UNITED STATES PATENT OFFICE'.

AUGUSTUS C. ZIERATH, OF LOS ANGELES, CALIFORNIA, ASSIGNOR T0 ZIERATH COM- i -BINATION DRILL COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION 0F y CALIFORNIA.

DRILLING-RIG.

Specification of Letters Patent.

Application led March 20, 1911.

Patented Dec. 31, 1912.

Serial No. 615,783.

To all 'whom t may conoem.'

Be it known that I, AUGUSTUS C. ZIERATH, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Im rovements in Drilling-Rlgs, of which the ollowing is a specification.

One object of the present invention 1sl .to provide a drilling ri in which the walking beam and connecte parts are of great strength and durability.

Another object ofthe invention is to provide, in a drilling rig, for elastic or yielding support for the temper screw and parts sus pended thereby.

Another object of the invention is to provide, in a drilling rig, improved means for shifting the walking beam so as to move it out of operative position and away from the derrick so as to leave the derrick clear for use with a rotary rig, for example.

Other objects of the invention Willappear hereinafter.

The accompanying drawings illustrate the invention, and referring thereto: Figure 1 is a side elevation of a part of the derrick and the operating mechanism of the drilling rig, including the walking beam and connected parts. Fig. 2 is a section on line :v2-:v2 in Fig. 1. Fig. 3 is a section on line :v3-mai Fig. 2. Fig. 4 is a side elevation of the upper end of the temper screw frame with the adjacent portion of the walking beam. Fig. 5 is a section on line :v5-:v5 in Fig. 4. Fig. 6 is an elevation of the end of the walking beam which is connected to the operating pitman.

1 designates a derrick of any usual or suitable construction. The walkin beam 2 is supported'on a frame located adjacentto ythe derrick 1, said frame comprising standards 4 and longitudinal rails 5, said rails ,supporting a slide member 6 adapted to slide longitudinally on the rails and provided with flanges 7 extending down outside of the rails to hold the slide member from lateral 'displacement Said rails 5 are preferably formed as I-beams and the slide member 6 is provided with lugs 8 extending beneath the upper flanges of said I-beams on the inside of the rails to insure retention of the slide member on the rail. One of rails 5 is perforated near the end flanges 9 and 9 extending at each side thereof, respectively, at the top and bottom of the'beam, and reinforcing angle irons or bars 15 and 15 in the angles betweensaid flanges 9 and 9 respectively, and the plate 2,', the lower flanges 9, and lower angle irons 15 extending obliquel upward from the middle of the beam to t e ends of the beams so as to approach the upper flanges, at said ends. This construction gives maximum stiness for given weight and cost. Secured to the lower flange of beam 2, at the midlength of said beam, is a bracket 12 having down-turned lugs 13 and the slide member 6 is formed with an up-turned lug 14 extending between `said down-turned lugs 13, and a hinge pin 16 is rovided extending through the lugs 13 and) 14 pivotally connecting and supporting the Walking beam on the slide member 6. Frame 4, 5 is sufficiently elevated to sup ort slide member 6 substantially at the height 4of the pivot of the walking beam, this construction giving maximum strength and facilitating the shifting of the Walking beam.

At its outer end, the walking beam is con- 'nected to operating mechanism of any suitable kind, indicated at 18, said operating mechanism comprising a crank 19 pivotally connected to a connecting rod or itman 20, the upper end of which is provi ed withl a yoke 21 embracing the walking beam andcarrying a cross pin 22 j ournaled in bearings 23 on thecuter end of the walking beam.

The inner end of the walking beam is provided with bearings 24 in which is j ournaled a cross pin 25 on the upper end of a temper screw yoke 26, said yoke embracing the walking beam and being perforated at 27 to receive a bar 28 extending u wardly from the temper screw frame 29. aid bar 28 is provided at its upper end with a head 30 and the oke 26 1s recessed as at 31 below said head to receive a spring 32 which engages between said head and the lower end of .said recess, so as to elastically or yieldingly support the bar 28 and the temper 'screw and drilling members' supported thereby.

In the drillingoperation, when lt-is oar- Vried on by standard or reciprocating process,

the walking beam is pushed forward to posi# tion shown in full lines in Fig. 1, so that the inner end thereof overhangs the well and supports the temper screw and depending parts withinthe well. In the operation of the drilling tools by the walking beam, any

jar due to the weight and movement of thev tools is taken up by the spring 32, so that the bearings of the walking beam and connected parts are protected from injury by such jar. The temper screw frame member 28 slides in perforation 27 in the yielding movement. In the reciprocating drilling operation, the walking beam works. up and down in the space between rails .5. In case f it is desired to clear the space within the the base, supports extending upwardly fromsaid base, two parallel rails carried by said supports, said rails having flanges at the top thereof, a slide member supported on said rails and extendin between. therails and slidably mounted t ereon, said slide member being provided with means' extending under sald anges on the top of the rails to retain theslide member in place, and a walking beam carried b'y, and pivoted on said slide member, and adaptedto swing in a vertical plane between the said two parallel rails.

2. In a drilling rig, in combination with the base, supports extending upwardly fromv said base, two parallel rails carried by said supports, said rails having flanges at the top thereof, a slide member supported on said rails and extending between the rails and slidably mounted thereon, said slide member being provided with means extend.- ing under said flanges on the top of the rails to retain the slide member in place, and a walking beam carried by,. and pivoted on said slide member, and adapted to swing in' a vertical plane between the said two arallel rails, a liange at the top vof one of said rails being perforated, in ycombination with a bolt extending through said perforation in the ange, and engagin In testimon my hand at l os Angeles, California, this `9th day of March, 1911;-

AUGUSTUS o. zinnarn.

AIn presence of.-

ARTHUR P. KNIGHT, FRANK L. A. GRAHAM.

said slide member to hold said vslidemem er 'in fixed position on 'the rails.

whereof, I have hereunto set r 

